After languishing for decades in the bowels of a New York museum, a dinosaur- era crocodile relative is seeing the light—and shedding secrets. New studies of the forgotten fossil reveal that the species walked on two feet and looked much like a so-called ostrich dinosaur, though the two are barely related, paleontologists report.

The specimen, Effigia okeeffeae, languished at the American Museum of Natural History for almost 60 years since its discovery at the Ghost Ranch quarry in New Mexico, near the digs of artist Georgia O’Keeffe, after whom the creature is named.

The National Geographic article also mentions that

Recently, though, Norell and study coauthor Sterling Nesbitt, a graduate student, reexamined the long-warehoused fossils. The pair soon spotted the distinctive “crocodile” ankle that first alerted them to the fossil’s potential importance.Ankle aside, Effigia had large eyes, a long tail, and a toothless beak—not unlike the ostrich dinosaurs. Effigia also walked on two feet, unlike modern crocs. These physical similarities suggest that Effigia and the ornithomimid dinosaurs evolved similarly during two different eras, the scientists say. The fossil record shows that many different features have been reinvented time and again in different species … Both Effigia and the ostrich dinosaurs would have evolved from a common ancestor that lived long before, the study says. Modern crocodiles are but one remnant of what was once a far more diverse croc family. “Today we think of crocodiles as looking basically the same,” said Nesbitt, of the American Museum of Natural History and Columbia University’s Lamont-Doherty Earth Observatory. “But in their history they took on a wide variety of different body plans.”

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